EP 2484394 A1 20120808 - Drive mechanism for a drug delivery device and drug delivery device
Title (en)
Drive mechanism for a drug delivery device and drug delivery device
Title (de)
Antriebsmechanismus für eine Arzneimittelabgabevorrichtung und Arzneimittelabgabevorrichtung
Title (fr)
Mécanisme de commande pour dispositif d'administration de médicaments et dispositif d'administration de médicaments
Publication
Application
Priority
EP 11153481 A 20110207
Abstract (en)
A lead screw (5), a lead screw nut and a drive member are aligned with an axis (4). A coupling between the lead screw and the lead screw nut allows a helical movement of the lead screw. The drive member is rotationally locked with the lead screw nut. The lead screw is coupled with the drive member to generate a helical movement of the lead screw when the drive member is moved in one axial direction. The coupling is overridden when the drive member is moved in the opposite axial direction. Spline features (25) are arranged on the lead screw in a row (20) parallel to the axis with alternatingly small and large gaps between succeeding spline features. A stop feature of the drive member has a dimension in the direction of the axis which is larger than the small gaps and at most as large as the large gaps.
IPC 8 full level
A61M 5/315 (2006.01)
CPC (source: EP)
A61M 5/31525 (2013.01); A61M 5/31555 (2013.01); A61M 5/3156 (2013.01); A61M 5/31585 (2013.01); A61M 5/31593 (2013.01); A61M 2005/2407 (2013.01)
Citation (applicant)
- DE 10237258 B4 20060921 - TECPHARMA LICENSING AG [CH]
- "Remington's Pharmaceutical Sciences", 1985, MARK PUBLISHING COMPANY
- "Encyclopedia of Pharmaceutical Technology"
Citation (search report)
- [XI] WO 2004078242 A2 20040916 - DCA DESIGN INT LTD [GB]
- [XI] EP 1944050 A2 20080716 - DCA DESIGN INT LTD [GB]
- [A] EP 0496141 A1 19920729 - LILLY CO ELI [US]
- [A] WO 2006089768 A1 20060831 - NOVO NORDISK AS [DK], et al
- [A] EP 0594349 A1 19940427 - LILLY CO ELI [US]
- [A] US 5318544 A 19940607 - DRYPEN JOHN [US], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11153481 A 20110207